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jure 17,2005 NOA Project Number: E04150A Page 2 the four-hour percolation test was observed by Mr. Michael Escotto,Registered Environmental Health Inspector,EHD. Measurement of the water level during the percolation test was from a fixed reference point on the PVC casing using an electric well sounder with an depth accuracy of 1/100th foot. All tabulated values on the field data sheet(appendix) are in decimal feet. After water drop was observed, the holes were checked for refill. The refill level was approximately 0.5 ft (6 inches) of water above the bottom level of the percolation test hole. The readings were taken approximately every 30 minutes for a four hour test or every 10 minutes for a one hour test. 6.6 Percolation Test Forms and Results The completed percolation test forms are included in the appendix of this report. A shallow percolation test is defined by the EHD as being between 36 and 42 inches in depth;a satisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop. Details of the percolation tests are summarized in Table 9. Table 9. Sionm of Percolation Tests. Test No., Percolation Percolation Rate 'Test Comment Date Tested Test Depth(ft) (minutes/inch) Duration (scc notes) P-1 shallow,2-23-05 3.10 1.70 1-hr Satisfactory percolation rate (Parcel 1) P-2 shallow,2-15-05 323 20.8 4-hr, Sads£actory percolation rate (Parcel 2) P-3 shallow,2-17-05 3.24 4.46 4-hr. Satisfactory percolation roc (Parcel 3) P-4 Shallow,3-8-05 3.5 7.81 4-hi. Satisfactory percolation rate (Parcel 4) P-5 shallow,2-2405 3.05 5.81 4-hr. Satisfactory percolation rate arcel 5 Note: A satisfactory percolation rate for a"shallow"test is less than or equal to 60 minutes per inch. 6.6:Attached to this letter is the corrected percolation test form for Parcel 2. 0/Z0 30Vd OHIlAN3 NOSd3QNd -1I3N 8ZZb69C60Z 59:L0 900Z/ZZ/90